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/* Return the type of license for a module. 0 for GPL, 1 for no license, 2 for
non-GPL. The license parameter is set to the license string or NULL.
This file is part of the Linux modutils.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include "obj.h"
/* This list must match *exactly* the list of allowable licenses in
* linux/include/linux/module.h. Checking for leading "GPL" will not
* work, somebody will use "GPL sucks, this is proprietary".
*/
static const char *gpl_licenses[] = {
"GPL",
"GPL v2",
"GPL and additional rights",
"Dual BSD/GPL",
"Dual MPL/GPL",
};
int obj_gpl_license(struct obj_file *f, const char **license)
{
struct obj_section *sec;
if ((sec = obj_find_section(f, ".modinfo"))) {
const char *value, *ptr, *endptr;
ptr = sec->contents;
endptr = ptr + sec->header.sh_size;
while (ptr < endptr) {
if ((value = strchr(ptr, '=')) && strncmp(ptr, "license", value-ptr) == 0) {
int i;
if (license)
*license = value+1;
for (i = 0; i < sizeof(gpl_licenses)/sizeof(gpl_licenses[0]); ++i) {
if (strcmp(value+1, gpl_licenses[i]) == 0)
return(0);
}
return(2);
}
if (strchr(ptr, '\0'))
ptr = strchr(ptr, '\0') + 1;
else
ptr = endptr;
}
}
return(1);
}
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